Help - mystery bug on turnips and radishes?
So we pulled off a row of insect cover today and found that something's decimated our radishes and turnips. I've never seen this bug before, but it was all over the leaves of most of our plants (they were literally covered), and they appeared to be present both as tiny black flies as well as what I would assume to be their larvae form, which looks like a tiny white egg--almost like an aphid.
I've attached a couple photos of the flies, which as you can see were covering the inside of the row cover as well. Hopefully it's visible in the picture, but in case its hard to make out, they're quite small (see my fingertip for size comparison) and they have long wings that point back behind them.
We have multiple rows of turnips, radishes, lettuce, and various brassicaes in this same area, so I'd like to figure out what we're dealing with and try to do something about it ASAP. The crazy thing is that they somehow managed to get inside our insect netting. Thanks in advance for any help.